Pipe-covering.



W. A. MACAN'.

PIPE COVERING.

APPLICATION FILED APR. 4. IsIs.

l 1 34,475, Patented Apr. 6, 1915` ,II l N\ 'I MIM Iltwlfl e I ujf* 1I-U" HIII I N I lIIII II QR I I, W hq I( IIIIII I IW 1v1/0mm MZWJM H4/lm 5MM www WILLIAM A. MACAN. OF RIDLEY PARK, PENNSYLVANIA, ASSIG-NOR TO EHRET MAGNESIA MANUFACTURING COMPANY, OF VALLEY FORGE, PENNSYLVANIA,

A CORPORATION OF PENNSYLVANIA.

PIPE-covEnING.

nisaiaas.

v Specification of Letters Patent.

Patented Api'. 6, 11.9115.

Application filed April 4, 1913. Serial No. 758,896.

" a citizen of the United States, residing at Ridley Park, in the county of Delaware and State of Pennsylvania, have invented a certain new and useful Improved Pipe-Covering, of which the following is a specification.

Coverings for the insulation of steam, water and other pipes, broadly stated, are of two kinds, to wit: those used for installation indoors and those used for installation outof-doors. T he first-mentioned coverings are not exposed to changing weather conditions and therefore are amply protected as at presen manufactured. The last mentioned coverings, however, or those installed outof-doors, require protection against changing weather conditions. As at present practised in the trade, three methods are employed for protecting against the elements saidpipe coverings when installed out-of- 4 doors. lBy one method, the pipe covering,

which as at present manufactured, is equipped with an exterior cotton jacket, has placed therearound an extra jacket of canvas, which is sewn on the covering vand this canvas jacket'is painted with two or more coats of paint. By another method the pipe covering has placed therearound a sheet iron jacket retained at intervals of from four to six inches by means of suitably secured iron straps. By still another method, the pipe covering has placed therearound what is known in the trade as rooring, either of saturated asbestos paper or saturated Wool felt of three or four ply secured to place at intervals of every four inches by means o copper or galvanized wire. It will be at once lapparent by reason of this practice, that in addition to the purchase of the pipe covering as now manufactured, it is required that additional materials be purchased and that additional tecting the pipe coverings against the weather, thus adding materially to the initial cost of installation. In addition to this fact, it may be stated that while the pipe coverings themselves may be installed in a large percentage of instances, approximately 7 0 per cent. by unskilled labor, the weather proofing thereof, by (any of the above-mentioned methods, cannot be satisfactorily and efficiently accomplished by the same class of labor. If effective, economic, Weather prooflabor be required for prof coverings as now manufactured is desired, it is under Vpresent methods as necessary to employ skilled labor. as it is necessary to purch-ase the weather proofing materials themselves. v

This invention has for its principal object to overcome these disadvantageous features ing of pipe .and to providea weather proofed pipe covering for out-of-door use which ,may be easily and cheaply manufactured and' assembled at the factoryv and shipped ready for use as a complete article of manufacture, which may be installed as thus shipped in most instances by unskilled labor.

A further object of the present invention is to provide a pipe covering for out-ofdoor use equipped with a weather proofed jacket of fabric coated with an elastic gumlike substance which is applied at the time of manufacture of said covering, whereby the purchaser receives a complete weather proofed pipe covering which can be readily installed by unskilled labor at a minimum saving of 20 per cent. over the present method of weather proofing pipe coverings.

A still further object of the present invention is to provide a pipe covering weather proofed atthe time of its manufacture. which may be marketed so weather proofed to eliminate the necessity, cost and inconvenience of purchasing additional weather proofing material: with its consequential labor cost of applying said weather proong material.

The invention, the improvements finally claimed.

The nature, characteristic features and scope of the invention will be more fully understood from the following description, taken in connection with the accompanying drawing forming part hereof and in which:

Figure 1, is a view in elevation, partly sectioned, of the pipe covering embodying the invention, Fig. 2, is an end view thereof, drawn to an enlarged scale, and Fig. 3, is a fragmentary view illustrating the weather proofed fabric employed.

In the drawings there is disclosed a section of pipe covering 1, which may be of any standard make and is commonly made up of a pair of semi-circular pipe inclosing units comprising alternate layers of asbestos paper 2, and Wool felt 3, said units being generally stated, comprises hereinafter described and asl ' manufacture,

bound together by a cotton, muslin, drill, duck or like fabric 4, which serves as` a hinge joint for said vunits during the installation period of the covering. As is Well known in the art to Which lthe present invention relates, this fabric l, is fcemen-ted to the semi-circular units, at the place of said fabric ends loosely overlapping the free edges of said units, which fab-ric ends are not cemented to place until after the complete covering has been fitted around a pipe. To properly Weather proof such pipe covering according to the principles best known to be at this time for practising the invention, there is .permanen-tly applied directly over the fabricfi, at the factory, the' the time of manufacture, l.an outer or auxiliary jacket of specially prepared 'Weather proofed material In practice good results have been obtained by usingfor this pur pose a cloth of cotton, drill, duck,

-muslin, or like fabric 6, one

face of which has 'applied thereto a thin coating of an elastic gum-like preparation 7, possessing Weather resisting qualities and thev other facel of which may have previously applied thereto, if desired, an adhesive for readily applying the Weather proofed material to the pipe covering 1 at the factory. Such Weather proofed cloth is 4permanently applied directly over the 'ordinary jacket 4, at the time of manufacture of the complete pipe covering and is of suflicient size so that the free end 8, thereof together with the ends of ,the fabric 4, may be lapped over the meeting edges of the pipe inclosing units, opposite the hinged point thereof, at the time of installation of thecovering l, seeFig. 2. It may be here remarked that said Weather proofed cloth may be finished in various colors to meet desired requirements and being relatively elastic is aptly vmention may be made fitted for the installed the pipe coveringabove described has adjusted bands `9. 1

Among the advantages connected With the albove described improvedv pipe covering, of the great ease With which its-component parts may be assembled at a factory and -shipped to destination ready for installation, as a complete article of manufacturefpossessing Weather proofingl qualtities; the ease with chaser, through unskilled labor, may install Said covering, ih an economical manner; the generally efficiency, neatness and uniformity of the covering upon installation, and the fact that the purchaser of.said pipe covering can as readily and economically install said pipev covering, as ordinary indoor pipe coverings not exposed tothe ,weather can be installed.

[Having thus described the nature and objects ofthe invention, what I claim asneW thereto the usual metallic and desire to secure by Letters Patent .is i Asa new article of manufacture a sectional ipe covering embracing .a pair of semi-cy inders of non-conductive material having a flexible jacket'of fabric for binding the same together and an outer jacket of fine mesh fa'bric exteriorly coated with anl elastic gum-like substance permanently applied to the flexible jacket at the time of manufacturing said sectional covering, the edges or flaps which the purof said flexible jacket and said outer jacket being free v for later appli- L cation.

' In testimony whereof, I have hereunto 

